Experimental evidence for Zeeman spin-orbit coupling in layered antiferromagnetic conductors

Abstract

Most of solid-state spin physics arising from spin-orbit coupling, from fundamental phenomena to industrial applications, relies on symmetry-protected degeneracies. So does the Zeeman spin-orbit coupling, expected to manifest itself in a wide range of antiferromagnetic conductors. Yet, experimental proof of this phenomenon has been lacking. Here, we demonstrate that the Néel state of the layered organic superconductor $\kappa$-(BETS)${}_2$FeBr${}_4$ shows no spin modulation of the Shubnikov-de Haas oscillations, contrary to its paramagnetic state. This is unambiguous evidence for the spin degeneracy of Landau levels, a direct manifestation of the Zeeman spin-orbit coupling. Likewise, we show that spin modulation is absent in electron-doped Nd${}_{1.85}$Ce${}_{0.15}$CuO${}_4$, which evidences the presence of Néel order in this cuprate superconductor even at optimal doping. Obtained on two very different materials, our results demonstrate the generic character of the Zeeman spin-orbit coupling.

arXiv comment10 pages, 5 figures, supplemental material enclosed

References in corpus (40)

• Hidden Order in the Cuprates
• LDA energy bands, low-energy Hamiltonians, t', t'', t_{perp}(k), and J_{perp}
• Progress and perspectives on the electron-doped cuprates
• Doping dependence of an n-type cuprate superconductor investigated by ARPES
• Topological order, emergent gauge fields, and Fermi surface reconstruction
• Charge ordering in the electron-doped superconductor Nd2-xCexCuO4
• Spin correlations in the electron-doped high-transition-temperature superconductor Nd{2-x}Ce{x}CuO{4+/-delta}
• Fast spin-orbit qubit in an indium antimonide nanowire
• Fermi Surface Evolution in an Electron-Doped High-Tc Superconductor Revealed by Magnetic Quantum Oscillations
• Commensurate spin dynamics in the superconducting state of an electron-doped cuprate superconductor
• The Strange Metal State of the Electron-Doped Cuprates
• Where is the quantum critical point in the cuprate superconductors?
• Gauge theory for the cuprates near optimal doping
• Phase Decomposition and Chemical Inhomogeneity in Nd2-xCexCuO4
• Angle-dependence of quantum oscillations in YBa2Cu3O6.59 shows free spin behaviour of quasiparticles
• Magnetic Breakdown in the electron-doped cuprate superconductor Nd${}_{2-x}$Ce${}_x$CuO${}_4$: the reconstructed Fermi surface survives in the strongly overdoped regime
• Magnetic-field-induced superconductivity in layered organic molecular crystals with localized magnetic moments
• High-field Hall resistivity and magnetoresistance in electron-doped Pr_2-xCe_xCuO_{4-δ}
• Coexistence of Antiferromagnetism and Superconductivity in Electron-doped High-Tc Superconductors
• Fermi surface reconstruction in electron-doped cuprates without antiferromagnetic long-range order
• Electronically competing phases and their magnetic field dependence in electron-doped nonsuperconducting and superconducting Pr0.88LaCe0.12CuO4
• The Phase Diagram in Electron-Doped LCCO
• Origin of the anomalous low temperature upturn in resistivity in the electron-doped cuprates
• Correlation between Fermi surface transformations and superconductivity in the electron-doped high-$T_c$ superconductor Nd${}_{2-x}$Ce${}_x$CuO${}_4$
• Spin-order driven Fermi surface revealed by quantum oscillations in an underdoped high Tc superconductor
• Fermi Surface of the Electron-doped Cuprate Superconductor Nd_{2-x}Ce_xCuO_{4} Probed by High-Field Magnetotransport
• Kramers degeneracy in a magnetic field and Zeeman spin-orbit coupling in antiferromagnetic conductors
• Impact of antiferromagnetic order on Landau level splitting of quasi-two-dimensional Dirac fermions in EuMnBi${}_2$
• Kramers degeneracy in a magnetic field and Zeeman spin-orbit coupling in antiferromagnets
• Resolving Spin-Orbit and Hyperfine Mediated Electric Dipole Spin Resonance in a Quantum Dot
• Two-Fermi-surface superconducting state and a nodal d-wave gap in the electron-doped Sm(1.85)Ce(0.15)CuO(4-d) cuprate superconductor
• Antiferromagnetism and hot spots in CeIn${}_3$
• Superconductivity and topological Fermi surface transitions in electron-doped cuprates near optimal doping
• Quantum oscillations in antiferromagnetic conductors with small carrier pockets
• Quantum oscillations from the reconstructed Fermi surface in electron-doped cuprate superconductors
• Magnetic quantum oscillations in doped antiferromagnetic insulators
• Fermi-Surface Selective Determination of the $\mathbf{g}$-Factor Anisotropy in URu${}_2$Si${}_2$
• Electric excitation of spin resonance in antiferromagnetic conductors
• Interplay between conducting and magnetic systems in the antiferromagnetic organic superconductor $\kappa$-(BETS)${}_2$FeBr${}_4$
• Magnetotransport evidence of irreversible spin reorientation in the collinear antiferromagnetic state of underdoped ${\mathrm{Nd}}_{2-x}{\mathrm{Ce}}_x{\mathrm{CuO}}_4$

Cited by in corpus (5)

• Zeeman effect in centrosymmetric antiferromagnets controlled by an electric field
• Unconventional spin textures emerging from a universal symmetry theory of spin-momentum locking
• On the size of superconducting islands on the density-wave background in organic metals
• Texture-induced spin-orbit coupling and Skyrmion-electron bound states in a Néel antiferromagnet
• Electron states, bound to a texture in a Néel antiferromagnet